When Adder-Staff Boggart enters the battlefield, clash with an opponent. If you win, put a +1/+1 counter on Adder-Staff Boggart. (Each clashing player reveals the top card of his or her library, then puts that card on the top or bottom. A player wins if his or her card had a higher converted mana cost.)

When Aethersnipe enters the battlefield, return target nonland permanent to its owner's hand.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

[+1]: You gain 2 life.
[-1]: Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.
[-6]: Put a white Avatar creature token onto the battlefield. It has "This creature's power and toughness are each equal to your life total."
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: Put a +1/+1 counter on Ashling the Pilgrim. If this is the third time this ability has resolved this turn, remove all +1/+1 counters from Ashling the Pilgrim, and it deals that much damage to each creature and each player.

As Ashling's Prerogative enters the battlefield, choose odd or even. (Zero is even.)
Each creature with converted mana cost of the chosen value has haste.
Each creature without converted mana cost of the chosen value enters the battlefield tapped.

When Benthicore enters the battlefield, put two 1/1 blue Merfolk Wizard creature tokens onto the battlefield.
Tap two untapped Merfolk you control: Untap Benthicore. It gains shroud until end of turn. (It can't be the target of spells or abilities.)